Viscosity modifiers for grafted starch polymer solutions

Abstract

Grafted starch polymer solution of a low viscosity through the use of cinnamic acid material. The cinnamic acid material is incorporated into the grafted starch polymer which is prepared from starch and vinyl monomer, preferably acrylamide.

What is claimed is: 
     
       1. A fibrous substrate having been prepared with a solution comprised of from between about 20 and about 35 percent on a solids basis of a graft polymer comprised of from about 70 to about 30 weight percent of a starch substrate, about 30 to about 70 weight percent of vinyl polymeric segments and a viscosity reducing amount cinnamic acid material. 
     
     
       2. The fibrous substrate of claim 1 wherein said solution is aqueous. 
     
     
       3. The fibrous substrate of claim 2 wherein said aqueous solution has a viscosity within a range of between about 1000 and about 8000 centipoise. 
     
     
       4. The fibrous substrate of claim 3 wherein said cinnamic acid material is from about 0.1 weight percent to about 10 weight percent of the polymer. 
     
     
       5. The fibrous substrate of claim 4 wherein said cinnamic acid material is from between about 0.5 to about 1.5 weight percent of said polymer.